基于无机空穴传输层的CsPbI_(3)太阳能电池研究

Study on CsPbI_(3) solar cells with inorganic hole transport layers

目的:为了探索稳定高效的钙钛矿太阳能电池,对基于无机空穴传输层的CsPbI_(3)电池进行器件模拟。方法:利用太阳能电池模拟软件SCAPS-1D,首先对基于不同空穴传输层的单结CsPbI_(3)电池进行比较分析,然后在此基础上构建CsPbI_(3)/Si叠层电池。结果:发现由于Cu_(2)O与CsPbI_(3)能带匹配合适且其空穴迁移率高,基于Cu_(2)O的单结CsPbI_(3)太阳能电池性能最佳。其与异质结硅电池构成的叠层电池的最佳效率高达~28.20%。结论:这些结果表明基于无机空穴传输层的CsPbI_(3)电池是实现稳定高效钙钛矿太阳能电池的一种可能的途径。

Aims:To explore perovskite solar cells with high stability and high efficiency,device modeling was performed for CsPbI_(3) solar cells with inorganic hole transport layers.Methods:By using the solar cell simulation software SCAPS-1 D,single-junction CsPbI_(3) solar cells with different hole transport layers were studied comparatively;and appropriate inorganic hole transport layer was used to construct CsPbI_(3)/Si tandem cells.Results:Due to high hole mobility of Cu_(2)O and its proper band alignment with CsPbI_(3),the CsPbI_(3) cells with Cu_(2)O as hole transport layer showed best performance.The energy conversion efficiency of CsPbI_(3)/Si tandem cells with Cu_(2)O as hole transport layers in top cells could reach as high as 28.20%.Conclusions:These results indicate that CsPbI_(3) solar cells with a proper inorganic hole transport layer provides a possible route for stable and efficient perovskite solar cells.